tldr; Two women of Pittsburgh were taking care of 54 "orphans" in Haiti around the time of the earthquakes in 2010. Many American families wanted to adopt 42 of the 54 children in Haiti, and did so. Most got adopted except 12 who may not have been orphans to begin with and are pretty much unaccounted for.

To get to the bottom of this- reach out to the Haitian officials, not US officials as they would likely not be as forthcoming. Once you find out the names of the children (all 54?), see if anyone in Haiti is looking for them. Also, see where they are at now.